How to choose an air conditioning unit? What are the common air conditioning units?

I. Water-cooled chiller
Water-cooled chiller belongs to the central air-conditioning system in the refrigeration unit part of the refrigerant for the water, known as chiller, and the condenser cooling for the use of room temperature water heat transfer cooling to achieve. Therefore, it is called water-cooled units, and water-cooled units relative to the air-cooled units, air-cooled units of the condenser by the forced ventilation with the outdoor air heat transfer to achieve refrigeration from.
1, screw chiller: screw chiller is a large and medium-sized refrigeration equipment to provide chilled water. Commonly used in national defense research, energy development, transportation, hotels, restaurants, light industry, textiles and other sectors of the air conditioning, as well as water conservancy and power projects with chilled water. Screw chiller is a complete refrigeration system composed of screw refrigeration compression and group, condenser, evaporator , and self-control components and instruments. It has the advantages of compact structure, small volume, light weight, small footprint, easy operation and maintenance, smooth operation, etc., and thus has gained a wide range of applications, with its single refrigeration capacity ranging from 150 to 2200KW, which is suitable for medium and large-scale projects.
2, centrifugal chiller: centrifugal refrigeration compressor and supporting evaporator, condenser and throttle control device and electrical table composed of the entire chiller, single cooling capacity from 700 to 420 OKW. applicable to sub-large, extra-large projects.
Second, air-cooled chiller
Water-cooled chiller and air-cooled chiller, the difference between the two mainly lies in the condenser. Water
Water-cooled chiller condenser mainly through the circulation of cooling water to take away the heat. Unlike water-cooled, air-cooled chillers use a fan to dissipate heat. Usually the finned condenser is used, and the fin actually refers to the aluminum sheet, that is, the part that needs heat exchange adopts the external installation of aluminum sheet in order to achieve high efficiency of heat dissipation, and then through the powerful fan will be hot air out.
1.Modular machine︰Developed on the basis of VRV system, it was invented and patented by Australian Jetwind Group in 1985. It changes the traditional Freon pipeline into water system, combines indoor and outdoor units into refrigeration units, and indoor units into fan coils. The cooling process is realized by utilizing the heat exchange of the refrigerant-carrying water. Module machine can be automatically adjusted according to the requirements of the cold load to start the number of units to achieve a flexible combination of this name.
2, air-cooled water-cooled screw machine: air-cooled screw and water-cooled screw is the difference between a condenser using finned condenser, the other - a kind of shell and tube condenser, suitable for larger cold plant, shopping malls.
VRV system
VRV system is variable Refrigerant Volume system, that is, refrigerant flow variable system. Its form for a group of outdoor units, by the function of the machine and constant speed machine, variable frequency machine. By connecting the outdoor units in parallel, the refrigeration piping is centralized into one piping system, which can be easily matched with the capacity of the indoor unit, and the suitable capacity of the indoor unit can be selected from 122.5KW to 1.5KW, i.e. up to 30 indoor units can be connected to one group of outdoor units.
The indoor units are ceiling-mounted, wall-mounted and so on. Individual indoor units of different types can be connected to a refrigeration circuit and can be individually controlled. The minimum capacity of the indoor unit is 0.6KW, the maximum is 3.75KW, the capacity of the indoor unit can be adjusted within 50% to 130% of the capacity of the outdoor unit.
Fourth, how to choose the refrigeration host
★According to the air-conditioning area of the building and the function of the room for air-conditioning cold load calculation;
★Statistics of the total air-conditioning load of the building;
★Most buildings need to consider the simultaneous utilization rate of the room, the general building's simultaneous utilization rate of
70~80%, special cases need to be determined according to the building function and utilization;
★ The chiller cold load is the product of the total building air-conditioning load and the simultaneous utilization rate. According to the calculated cooling
According to the calculated cooling load of the refrigeration machine can choose the refrigeration host;
★The number of refrigeration hosts can be determined according to the building owner and the building's equipment room;
★ host form can be based on the owner's actual situation or according to the project to determine the comparison of a variety of programs, select the most suitable for the project host form.
An office building area of 2000 square meters, air-conditioned area of 1500 square meters, the whole building selection of VRV system, how much cooling capacity should be selected outside?
According to the empirical cooling capacity calculation: 1500 square meters × 200W/㎡ = 300kW/2500W = 120HP.

Xinxiang Yukun Refrigeration Technology Co. is a production and sales of refrigeration two apparatus parts and sheet metal products, mainly engaged in condenser, evaporator, heat exchanger, reservoir, filter drier, Fin Evaporator (condenser), Stamping Parts, sheet metal parts, aluminum tubes for refrigeration, etc.

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Our company mainly produces products for:Fin Evaporator.Fin Type Condenser.Capillary Tube.Aluminum Coolant Reservoir.Plate Reinforcement Parts.Stamped Parts.Aluminum Tube.Instrument Testing Equipment.
Supermarket Refrigeration Show Case Copper Condenser Coil
1. OEM or ODM can be accepted
2. Fin type: Louver or corrugated
3. Be customerized according to samples and drawings.
4. High quility and low price and energy saving 60% (CE, RoHS, EMC and ISO9001 certification) The CD series products can be used in Various specificantion Condensing Units .